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Life gets much more interesting when you have the full quadratic expression ax^2+bx+c=0 I sincerely hope that Kumon doesn't force you to factor them by hand. I found Kumon depressingly repetitive, and my kids didn't like it at all.

I suppose I can ignore the 3 and go thought the same process of assuming that the expression equals zero. 2x^2 + 5x + 2 = 0 2x^2 +5x = -2 x (2x +5) = -2 so x = -2 but I do not know how to get the -1/2 -What am I missing?